EFFECT OF UPSETTING-EXTRUSION-UPSETTING ON THE RECRYSTALLIZATION OF AN Mg-9Gd-4Y-2Zn-0.5Zr ALLOY
نویسندگان
چکیده
In this study, the effect of upsetting-extrusion-upsetting (UEU) on microstructure an Mg-9Gd-4Y-2Zn-0.5Zr alloy and dynamic recrystallization (DRX) was investigated. The results showed that after UEU, DRX occurred in alloy. Namely, grain refinement at cross-sectional edges UEU specimens significant, with size being refined from 8.27 µm necking region to 6.57 µm. Grain is mainly caused by where long-period stacking order (LPSO) phase stimulates around boundaries through a particle-stimulated nucleation mechanism. grains play important role weakening texture offsetting severely deformed structure grains.
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ژورنال
عنوان ژورنال: Materiali in Tehnologije
سال: 2022
ISSN: ['1580-2949', '1580-3414']
DOI: https://doi.org/10.17222/mit.2022.372